Lamp-globe.



J. L. DINSMDOR.

LAMP GLOBE.

APPLICATION FILED MAY 14, 1908.

Patented June 1, 1909.

[ll 1 ll "IVE/l TOR JohzzZ Din szieour WITNESSES UNITED STATES PATENTOFFICE.

JOHN L. DINSMOOR, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO HARRYHERTZBERG, 0F BROOKLYN, NEW YORK.

LAMP-GLOBE.

Specification of Letters Patent.

Patented June 1, 1909.

Application filed Kay 14, 1908. Serial No. 482,766.

construction of gas check.

Fire underwriters and inspectors, in many localities, require thatglobes for lamps, and

particularl are lamps of certain types, be protected y anet, the mainfunctions of which are to prevent injury from falling parts of the globeshould the same become cracked or fractured, to strengthen the globe,and, also, in event of the obe becoming cracked to hold the tfiereoftogether, thereby precluding t e carbon dust from spreading about.

My net is an improvement over the ones heretofore employed as regardsits efiiciency, simplicity in construction, readiness of aplication ofthe globe, and economy in manuacture:

My improved gas check embodies novel means secured to the edge of theglobe, which not on] strengthens said edge, but

granite of a use joint being readily made tween the edge of the globeand the bottom platform of the lamp thereby increasing the bio of thecarbons owing to their confinement an atmosphere of comparativelynon'oxidizing gases.

The net and gas check are nerally used in comunction, thereby contriuting lpintly to the efiiciency of the globeto wlnc they are applied,but it will be manifest that, for j -certam purposes, they may beousedsepa-i rately. A p

In the accompanying drawin I have illustrated different raetical em cutsof the invention, but t e constructions shown therein are to beunderstood as illustrative, only, anc'l not as defining the of their:-vention. i r

elevation, showing thelinvcntiona p ed to, enduse 1n connection with, aglo F "view of the lower'collar. Fig.3 is across S lamp, .Fig 2 isjaninvertedorfbottoin plan 0 annel'edwl? of anelectricrarc' tion throughsaid lower collar. Fig. 4 is a bottom lan view of another form of thelower co ar. Fig. 5 is a .cross section of the collar shown in i 4, andFig. 6 is a cross section of a art 0 the up to the top a e of a lamp gobe substantially as shown in ig. l.

A desi nates one form of the lobe which is shown lerein as having aclose and pointed lower end, a, and an upstandin flange, a, at its upperopen end, but it be understood that the form of the globe is not amaterial part of the invention. Said globe is shown as held against thebottom of platform, B, of a lam by a yoke, O, and a clamp ing screw, 1),sai screw being supported in a threaded bearing or nut, c, of said yoke,C.

The means for rotecting globe, A, consists of a rim or c0 lar, E,adapted to be fitted to the up ipr part of said globe, another collar,F, app 'ed to the lower part of said globe, and a net, G, the latterbeing connected to said up or and lower collars, E, F, respectively, byacing a substantially continuous WIIB back and forth between thecollars, the lengths of said wires courpgiosin the net engaging with theouter s ace 0 globe, A.

The preferred construction of upper collar, E,isshowninliigs.landfiofthcdra' and said collar is in the form of a charm ed rim adaptedto serve as a combined gas check and as a collar for the attachment ofthe wire composing the globe inc net. Said channeled rim, E, isprovided, as own more clearlyin Fig fi, with aninternal flange, j, aflat upper surface or web,-, and maxternal flange, 7c. Said externalflange of the upset collar is doubled or folded upon itself, an

r collar applied is provided with kerfs or'inclsionfi,

the latter producing the external net at-r taching devices, 1:, areinithe form of sis mel r wit respect tothe I I q qwfilm fiat uppler ur.J

of globe, imsothat its'flat ace-or web, t, is adapted for-engagementwith lamp platfOI'IIl, l

ewe s llilril is p d, sent a ly,

ofiaonepieceivmetellic rim providedw-am th o said. tonne? the length of.ne fadap'ted to compose" t n; 1

which: r -tects th'e globe. asshownsing ,Fig'stland 3, said lowercollar"!!! n gan lingvfthat F) "e P ece of metal w shaped to therequired form by the operation of suitable dies. Said collar consists ofa ring, 6', on the outer edge of which is a series of lips, f. Saidlower collar, F, is 5 preferably somewhat smaller in diameter than theupper rim or collar, E, and the hps, j", of said collar, F, extend oropen downwardly substantiall as shown in Fig. 3. The relative sizes 0collars, E, F, is not an important feature of the invention, for thereason that said collars will be made to correspond, substantially, tothe external diameter of globe, A, at the points where said collars areto be fitted thereto.

As shown in Fig. 1, lower collar, F, is applied externally to the lowerclosed part of globe, A, whereas upper rim or collar, E, is

tted to the edge of said globe.

It is preferred to employ a substantially continuous length of wirewhich is laced heel: and forth between upper rim or collar, E and lowercollar, F. Said wire is looped around lips, 1:, of the upper rim orcollar, E, thence carried outside of the globe, lengthwise thereof, tolips, f, of lower collar, F, around which said wire is looped. The wireis then carried upwardly to rim or collar, E looped around another lip,is, thereof, and thence carried downwardly to lower collar, F, thisoperation being continued until the wire substantially incases the lobe.Said wire m engaged alternately wit the lipsof upper an lower collars,E, F, after which the ends of the wire may be twisted together, or saidends may be fastened in any suitable or approved way.

From the parent that t e lips o collars E, F, provi 0 easy and convementmeans for loo the strand or wire so as to attach the atter to thecollars. The lips of the collars are of such form that the wire cannotbe displaced therefrom, said wire being held in a taut condition.

Obviously the collars may be easily and aluickl applied to a globe, andthe wire ereafter' expeditiously laced around the globe and engaged withthe external lips of said collars, us enabling unskilled labor to beIeggnployed in applying the protector to a description it is a Anotherform of the lower collar is shown in Figs. 4 and 5 of the drawings,wherein the collar consists of a spun metal ring, H, one edge'of whichis turned over to duce a flange, h. After the ring shall ave been spunto the required form, a series of slits or karts, h, are cut in theturned-over flange, h. The spun metal ring and its Jfl f e are adaptedto be econonucally and quii sl rly roduced, and thereafter the .kerfsare cut y a rotary metal saw cutting into said curved flange, h. ",It isto be observed that the ring, H, is constructed to produce externallips,

hi similar to the lips, f, of the punched collar shown in Fi e. 2 and 3,said lips 11. being on the outside 0? the collar so as to producethereon the net attaching devices.

The upper rim or collar, E, shown in Figs. 1 and 6, may be a spun metalrim having a channel in one side thereof, or it may be a punched met-a1rim having the channel, the up r side of the collar Ipresenting a solidor un roken surface whic 1 is formed by the web, i, which resents asubstantially f at annular face. aid channeled rim, E, is f oted snuglyover the upper edge of globe, A, so as to embrace said edge, therebysecuring a reinforcing device for the edge of the globe, which deviceprecludes the possibility of the edge chipping in the operation ofhandling the lobe. t the same time, said channels rim is adapted tocooperate with lamp latform, B, in a way to produce a gas tight ointbetween the globe and said platform of the lamlp frame.

It wi be noted that flat surface or web, 'i, of upper collar or rim E,engages with platform, B, and by t htening screw, D, the

lobe is pressed upwardly so that the flat face or web, '5, o rim E, willbe forced tightly against platform, B. This recludes the ingress of airinto lobe, A, and t e egress of gases from said glo e, whereby the arcis enveloped by an atmosphere of comparatively non-oxidizing s.

It will be observe that the external lifis of the upper channeled rim orcollar, have the engths of wire looped around them, thus anchoring theupper lengths of wire composing the net, G. It is manifest that thechanneled rim, E, and the external lips thereof may be composed of castmetal, spun metal, or punched metal, but for accuracy in constructionand economy in manufacture, it is preferred to either punch said rim orspin 1t.

Ha thus fully described the invention, what I c im as new, and desire tosecure by Letters Patent is:

l. A lamp lobe ha its edge provided with a chann ed rim em racing theedge of said globe and forming a gas check therefor, and net-attachingdGVlOBS on said rim.

2. A lamp lobe having its edge provided with a channe ed rim permanentlysecured to the globe and embracing the edge portion thereof to form agas check there or net-attac devices on said rim, a collar provided withnet attaching devices, and a net secured to said net-attaching deviceson the rim and collar respectively.

3. A lamp globe having its upper edge provided with a channeled rimrmanently secured to'the'ed e rtion 0 said globe'and forming a gas sotherefor, not attaching devices on said rim, a collar near the lowerpart of the globe, and a net incasing the globe and com osed of asubstantially continuous length 0 wire laced back and forth between therim and the collar.

4. A lam globe 0 en at its upper end, and a channeled rim emgracin theed I e portion of said globe, said channeled rim ing provided with abearing ed e adapted for enga ement with a lamp plhte so as to form asubstantially gas tight joint therewith, said channeled rim beingprovided, also, with net attaching devices positioned substantiallybelow said bearing edge.

5. A lam globe open at its u per end, and a metallic clianneled rimapplie to the upper portion of said globe, said rim embracing the edgeof said globe and the inner and outer faces adjacent to said edge, theupper face of said rim forming a bearing face a apted for substantiallygas tight engagement with a lamp plate, said channeled rim beingprovided with net-attaching devices which are positioned exterior-1y to,and below the plane of, said bearing face of the rim.

6. In a device of the class described, a metallic rim provided with achannel or groove, said rim ha v a bearing face on one side, andnet-attaching devices projecting from the outer side of the rim andpositioned below said bearing face.

7. In a device of the class described, a metallic rim composed ofconcentric flanges and a web uniting said flanges, said web and flangesforming a channel which opens through one edge of the rim, and said webCODSUtUf a continuous bearing face on the opposite h rfge of the rim,and net-attac devices integral with the outer flange of the rim, andpositioned substantially below said bearing face.

8. In a device of the class described, a metallic rim provided with achannel which opens through one edge thereof, the opposite edge of therim being closed by a web which forms a bearing face, and hooks integralwith said rim and positioned externally thereof, substantially belowsaid bearing face.

9. The combination with a lamp late, of a globe, a channeled rimembracing t 1e edge of said globe and provided with a bearing faceadapted for engagement with said lamp plate, said rim being provided,also, with net-attaching devices positioned exteriorly thereon, a.collar on the globe, a net enga ing with said collar and thenet-attaching devices of the rim, and means for clamping the globe forthe bearing face of said channeled rim to engage firmly with the lamplate.

10. The combination 0' a lamp globe. a channeled rim embracing an edgeof the -lobe at the open u er part thereof, said rim having an exposegearing face and net-attaching devices below, and exteriorly to, saidbearing face, a collar on the lower art of the globe, and a net engagingsaid col ar and the net-attaching devices of the rim, said net beinglaced to raw the channeled rim int-o firm e agement with the ed e ofsaid globe.

n testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

' JOHN L. DINSMOOR.

Witnesses:

H. I. Bnmmn, V. E. Manmmr.

